Motor for phonographs.



J. H. DUDLEY MOTOR FOR PHONOGRAPHS. APPLICATION FILED mm, 1:311.

Patnted N0v.'13, 1917..

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JilDbo/ef 6] his )Vttome I 1. H. noouv. MOTOR FOR PHQNOGRAPHS. APPLICATION FILED JAN. 3, 151'].

Patented N0v. 13, 1917.

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UNITED STATES PATENT OFFICE. i

JAMES H. DUDLEY, OF EAST ORANGE, NEW JERSEY, ASSIGNOB TO DE CAMP AND SLOAI I,

INC., A CORPORATION OF NEW JERSEY.

MOTQR FOR PHONOGBAPHS.

Specification 0! Letters Patent.

Application filed January 8, 1917. Serial No. 140,382.

simple and economical to c011stm1ct,-and also to assemble; whereby the simple insertion of these springs in the casings and-bringing cause them to assume an interlockin them together on the bearing member will.

position at once ready for use; and which. urther will facilitate the removal of a spring and substitution, in case of injury.-

A further object is to improve means in such a device for more readily attaching the extremities of the springs to the bearing memliiers, and to the casings.

In the accompanying drawings illustrat mg one embodiment of my lnvention, Figure 1 is vertical section of the motor and connected parts. Fig. 2 is a section on the line 2---2 of Fig. 1 taken at a right angle to that view. Fig. 3 is a bottom plan of one of the spring casings; Fig. i is a section on the line 4-4 of Fig. 6. Fig. 5 isa plan of one of the casing covers Fig. 6 is a vertical section through one of the casings. Fig. 7 is a vertical section of one of the casing covers. Fig. 8 is a vertical section enlarged, showing the locking lugs of the casings in one portion. Fig.9 is a similarview of one lug. Fig. 10 shows enlarged the locking of the outer end of one spring. Fig 11, is a cross section into the spring shaft, at 11, showing the locking of the spring inner end to the shaft sleeve; and Fig. 12 shows the inner end of the spring.

Asshown in the drawings the frame 12v of any suitable form, is suspended from the top board 13 of the instrument. In this frame rotates the shaft 14, that projects up through the top, to receive the usual table on which the record disk is placed. t0 be rotated.

It iS-CilSizDlXlfll'j' in this art to provide a 'lar form is pair of 'evolute sprin s that are connected by their outer ends, whi e the inner ends of the; sprmgs are connected, one to drive the table shaft, and the other with the winding means, such' as a handle and connectin gears. By this arrangement thei otor can e Wound up at one end, while the ther end is operating to revolve the table shaft, and the instrumentneed not be stopped for winding.

As shown I have provided a pair of coil springs 15 and 16 that are mounted in separate casings. The spring 15 is mounted in a casing formed of a druniand a cap. The

v drum comprises a base 17 and a side or flange 18 integral therewith, of cylindrical. form as shown in Figs. 5 and 6. A 19 of simirovided whose ange 20 fits snug on the ange 18 of the drum, as indicated in Fig. 1. Locking means retain the cap on the drum, such as bent portions or lugs 21 in the cap that will sprin' into similar socket portions 22 in the drum ange; that will retain the cap on the'drum, under normal conditions, but permit easy removal to replace the spring. The other spring 16 is provided with a similar casing comprising a drum 23 and a cap 2-4 thereon. These two drums with their caps are construc'hixi identically the same, but placed in rse positions, back to back, on the hem member therefor; the drum. having a (Jrlltlfli oped ing 25, and the ca having a larger central opening 26, to receive the bearing member.

' Speclal means are provided. on the drums to engage the outer ends of the springs, and as shown I provide a depressed portion or strip 27 on the drum flange 18, see Figs. 3

and 6; thatforms a kind of eye, that is- Patented-Nov. 13, 1917.

caused to project into the slottedportion 28 r of the end of the spring 15; whereupon a pin 29 is passed through the eye and secures the spring to the drum flange, as shown 'in Figs. 1 and 10. The same fastenin means is provided at 30rfor the outer on of the spring 16. For the purpose of practically securing together the outer ends of'the two springs, since the springs are fast to the casings or drums, it is only hecessary to secure the drums together. For this purpose I provide one or more projections 31 in the'hase 17 of each drum, adjacent which is an opening 32 in the base, as shown in Fig. 3. These when the drums are brought together, back -'to back, obviously, the projections extend in opposite circular directions. The projections of each drum are caused to enter the openings adjacent the projections of the other drum, and then the drums are given.

a twist that will cause each projection to overlie that of the other drum and interlock as indicated in Fig. 8. This is so designed that the tension of the wound springs Will retain the lugs inthls locking position and they cannot looser. unless the drums are turned in the reverse direction; which, of course, cannot be done by the winding up of the spring and only by actually turning the drums in such reverse direction.

i providea sleeve for each of the drums, hav ng means to engage and lock the inner u ings, As shown a rod or 2d in the frame 12, and sleeves 34 and 35 mounted to rotate thereon. The sleeve 34 projects into the drum 1? and has the innerend of the spring secured thereto. For this purpose I pro vide a stud having a tapered head, which stud. passed. through an opening 37 in one side of the sleeve, and fits into a tapered open- ,ing 38 in the oppositeside of the sleeve, to

have its hook portion 39 project beyond the sleeve. The shaft 33 being passed into the sleeve will retain the stud in this position, as will be understood by referring to Fig. 11. The inner end of the spring is provided with. a tapered slot40 as'shown in a shaft 47.

Fig. 12, at which position it engages the stud in its hook extremity, and is thus retained in position by this hook, and the adj acent convolution. A similar stud 41 is ar ranged in the sleeve 35 to secure the inner end of the spring 16.

As shown, the sleeve-35 has a gear portion 42, engaging a worm 43 on the winding shaft 44. The other sleeve 34 has a gear 45 fastened thereon meshing with a gear 46 on The latter carries a gear 48 en gaging a; gear 49 on the table shaft 14. This train of gears serves to drive the table much faster than that of the spring sleeves.

It will thus be seen that when the handle shaft 44 is turned, the sleeve 35 will wind up the coil spring 16 from its inner end. This will tend to tlfru the casing or drum 23, and the latter being interlocked with the other drum will rotate the same. and wind up the spring 16 from the outer end connected to the drum. This will serve to put both springs under equal tension as they are being wound. When the table is released it will be turned from the sleeve 34 by the unwinding of the two springs.

It will thus 'beunderstood that the spring drums are of very simple construction, being readily constructed by cutting and shaping dies. The caps for the drums are simple and are simply applied and held by spring pressure. The springs are secured to the integral eyes on the drums by the mere insertion of a pin. The connection of the springs with the two sleeves is also very simple and cheap to make and assemble. The studs are inserted and the sleeves are fast on the supporting shaft and the springs engage the hooks of the studs. The mere bringing together of the two drums and turning them will cause the hook projections to interlock, and no other fastening means is needed, nor any mechanical operation requiring tools to secure them together. When a spring is to be replaced it can be very readily removed by taking off the cover and slipping out the pin, and it is easily substituted.

Having thus described my invention, What I claim is 1. The combination of a shaft, a sleeve loose on the shaft, a coil spring on the sleeve having the inner end fast thereto, a casing surrounding'the spring and secured to its outer end, a second sleeve loose on the shaft, a second coil spring fast at its inner end to the second sleeve, a second casingv surrounding the second spring and secured to its outer end, said casings having their contiguous side faces provided with integral locking means, comprising a hook portion projecting from each casing to engage a similar portion on the opposite casing and end, a second bearing member, a second coil spring fast at its inner end to the: second bearing member, a casing surrounding the second spring and secured to its outer end, said casings having their contiguous side faces provided with integral locking means, comprising a hook portionprojecting from each casing and. adapted tointerlock on bringing the casings together and turning one relative to the other, each casing compr1s1ng...a drum portion formed of a base and a" cylindrical flange, a cap or cover adapted to fit over the flange and provided with integral locking means.

,3. The combination of a bearing. member, a coil' spring on the bearing member having the inner end fast thereto," a casingsurneacnni rounding the spring and secured to its outer end, a second bearing member, a second coil spring fast at its inner end' to the second bearing member, a casing surrounding the second spring and secured to its outer end,"

said casingshaving their bases contiguous and provided with integral locking means arranged to interlock upon bringing the bases togetherandqrotating them in the direction to tension the springs.

d. The combination of a bearing member, a COll spring on the bearing member having the inner. end fast thereto, a casing surrounding the spring and secured to its outer end, a second bearing member, a second coil spring fast at its inner end to the second ljiearing member, a casing surrounding the second spring and secured to its outer end,

said casings having their bases contiguous and provided with integral locking means arranged to interlock upon bringing the together in any relative position and rotating them in the direction to tension. the srings.

illhe combination of a bearing member, a coil spring on the bearing member having the inner end fast thereto, a casing surroundiug the spring and secured to its outer end, :1, second bearing member, a second coil spring fast at its inner end to the secondbearing member, a casing surrounding the second spring and secured to its outer end, said casings having their bases contiguous and provided with integral locking means comprising a hook portion projecting from each casing adapted to engage a similar portion onthe other casing whereby the outer end, a second hooks will interlock on bringing the casing bases together and turning one relative to the other.

6. The combination. of a bearing member, a coil spring on the bearing member having the inner end fast thereto, a casing surround ing the spring and secured to its outer end, a second bearing member, a second coil springfast at its inner end to the second bearing member, a casing surrounding the second spring and secured to its outer end, said casings having their bases cor and provided with integral. locli'ii" arranged to interlock upon b bases together and rotating than i? rection to tension the springs, casings being identical in construction whereby they are'interchan cable on the bearing members,

7.- The com ination of a bearing member, a coil. spring on the bearing member having the inner end fast thereto, a casing surand secured to its aring member, a 0nd coil spring fast at its inner end to the second bearing member, acasing surrounding the spring rounding the second spring and secured to its outer end, said casings having their bases contiguous and provided With integral looking means comprising a hook portion pro jecting from each caslng adapted to engage a similar portion on the other casing whereby the hooks will interlock onbringing the casing bases together and turning one relative to the other, said casings being identical in construction whereby they are interchangeable on thebearing members.

JAMES H. DOOLEY. 

